Test Tubes
Also known as culture or sample tubes, test tubes are a common piece of laboratory glassware made of clear plastic or glass tubing with a rounded U-shaped bottom. There are a multitude of lengths and widths but the most common are 10-20mm wide and 50-200mm long. Tubes are usually made from borosilicate glass or fused quartz so they can be placed over a source of heat. They are very resilient and can stand temperatures up to 300 degrees centigrade. As well as being round-bottomed, some test tubes can be flat-bottomed or conical-bottomed. Some can have a ground glass stopper or screw cap and some have a white glass area for labelling the samples with pencil. If they need to be heated, glass is preferred. Otherwise for culture tubes, they are made of polystyrene or polypropylene which are discarded after use. Plastic test tubes with a screw top are also called falcon tubes. Some may have prepared contents. For example, a blue top tube of 5ml could contain sodium citrate as an anticoagulant for medical testing. Test tubes are essential pieces of laboratory equipment used for the handling and culturing of all kinds of live organisms as well as storing samples of blood and other fluids.
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Behr Labor-Technik Stopper with tube connection B00513692 - General Lab (1 Supplier)
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Behr Spare stopper NS 24 B00168597 - Water sampling bottles and glass stoppers, behrotest® (1 Supplier)
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Behr Spare stopper NS 29 B00168598 - Water sampling bottles and glass stoppers, behrotest® (1 Supplier)
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Bel-Art Gas Collecting Tubes PP Cap 250ml F19953-0000 - Gas sampling tubes, PP (1 Supplier)
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Bel-Art Gas Collecting Tubes PP Cap 250ml F19955-0000 - Gas sampling tubes, PP (1 Supplier)
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Bel-Art Gas Collecting Tubes PP Cap 250ml F19957-0000 - Gas sampling tubes, PP (1 Supplier)
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BG capillary tube 140µl (1 Supplier)
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BG capillary tube 175µl (1 Supplier)
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Biosphere® lid chain, flat (1 Supplier)
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Biosphere® SafeSeal Tube 0.5ml (1 Supplier)
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Biosphere® SafeSeal Tube 1.5ml (1 Supplier)
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Biosphere® SafeSeal Tube 2.0ml (1 Supplier)
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Biosphere® SC Micro Tube 0.5ml (1 Supplier)
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Biosphere® SC Micro Tube 1.5ml (1 Supplier)
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Biosphere® SC Micro Tube 2.0ml (1 Supplier)
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Biostep Test-tube Atomizer Glass Cap 12ml BS123.990 - Test tube atomiser, glass (1 Supplier)
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Bohemia Cristal Test tube 632437010823 - General Lab (1 Supplier)
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Bohlender HT Laboratory Screw Joint GL 14 Ø 6.00mS D 628-50 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender Ht Laboratory Screw Joint Gl 14 D 628-34 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender Ht Laboratory Screw Joint Gl 14 D 628-66 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender HT Laboratory Screw Joint GL 14 Ø D 628-74 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender Ht Laboratory Screw Joint Gl 14 D 628-78 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender HT Laboratory Screw Joint GL 14 D 628-82 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender Ht Laboratory Screw Joint Gl 18 D 629-18 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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Bohlender Ht Laboratory Screw Joint Gl 18 D 629-22 - Laboratory threaded joints, GL 14/18/25/32 (1 Supplier)
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